[2C16-21] Decommissioning Technology for Fukushima 2

[2C18] Development of Ultramicro Analysis Technology for Fuel Debris Analysis

(5)Consideration of Analytical Methods for Actinide Elements with ICP-MS/MS

*Hiroyuki Kazama¹, Yoshihiro Sekio¹, Koji Maeda¹, Kenji Konashi², Chikage Abe², Yasuyoshi Nagai², Tatsuya Suzuki³ (1. Japan Atomic Energy Agency, 2. Tohoku University, 3. Nagaoka University of Technology)

Keywords:Fuel debris, ICP-MS/MS, Actinides, Analytical chemistry

Inductively coupled plasma mass spectrometry with triple quadrupoles (ICP-MS/MS) is one of the promising techniques for rapid and highly sensitive wet analysis of fuel debris in Fukushima Daiichi nuclear power plant. The collision/reaction cell technology implanted in ICP-MS/MS is available option to eliminate isobaric interferences, being expected to simplify the pretreatment of fuel debris analysis. In this study, ICP-MS/MS measurements of ²³⁸U and ²³²Th with collision/reaction gases were performed. On the basis of their gas reactivity, analytical methods for U will be discussed.